Schumann PLL Offboard Madness

[selfdestroyer]

All, I know a few of you have built the PLL clone on the PCB by toecutter and I have a cry for help. I am so confused on the bypass switching. I have been looking at the schematic for 45 minutes now and it just does not make sense to me. Can someone help?

Info: I am using the last PCB 1.3 that has all the fixes from the previous boards. I have no subbed parts (Not that it matters since i am just trying to figure out the offboard madness). I am getting +12 & -12 on my test lugs.

Schematic I am using:


Here is my PCB:


This is how I understand it:
DR1 & DRG = External drone expansion
C-OUT = Clean Output
IN & Input = Inputs
O/P = Output
FS1 & FS2 & FSG = External Footswitch

It looks like the S1 3PDT on the schematic is wired just like a standard pedal bypass, right?
I see a LED G pad that I am guessing is the ground pad for switching, right?

I am sure I am overthinking this whole thing, but its got me stumped. Ultimately I would like to wire up the "External Footswitch" internally along with the bypass. Can anyone point out how dumb I am and help?

Edit: I was looking at this pic trying to figure out the external footswitch wiring... head exploded.


Thanks
Cody

[selfdestroyer]

Update:

Found this at DIYSB Forums


and this



Im not sure if this guy has his working 100%.

[selfdestroyer]

Update Update:
Looks like Toecutter did have something drawn up and buried in his Photobucket:


Im going to give this a go for the bypass and then start on the external footswitchs internally.

Im tracking all this so it might help others.

Cody

[davent]

Thanks for doing this Cody, i'm still sitting on my boards. There is i believe a fix on the last board involving the the 2M pot, i'll have to look it up on the other computer.

dave

[bcalla]

Note that I read on one of the forums - probably DIYSB - that the clean out isn't really a clean out.  It's more like a cleanER out.  I don't want you to think you screwed the wiring if during testing you don't get a clean signal from that jack.

I have one of these partially built using one of the earlier boards that needed a bunch of cuts and jumpers.  After carefully following the instructions to bring the board up snuff, I found during testing that some of the cuts/jumpers reverse the pots, e.g. making volume decrease when turned clockwise.  So I spent time with the schematic figuring out which cuts & jumpers needed to be reverted to correct the pot rotation.  I think I may have messed that up.  I'm not optimistic that mine will ever work.  I'd love to get a clean set of boards & reboot.

[alanp]

I've got a blue board... something is killing the signal on the first opamp or two. I should probably troubleshoot it again.

[selfdestroyer]

Got it working this morning and thing thing is a great mangler... so much fun. I used my iPhone as a singla source and just fed in a M83 album and tweaked knobs.. sonic destruction.

I am going to start laying out a 1590DD and leave room for the external footswitches internally and see if I can figure them out on the fly.

Thanks for doing this Cody, i'm still sitting on my boards. There is i believe a fix on the last board involving the the 2M pot, i'll have to look it up on the other computer.

dave

I seen Glops say:

I also am liking a 250k instead of the 2m pot in the PLL's looping section.

Not sure if thats what your talking about. I can't find anything else regarding the 2M pot.

Note that I read on one of the forums - probably DIYSB - that the clean out isn't really a clean out.  It's more like a cleanER out.  I don't want you to think you screwed the wiring if during testing you don't get a clean signal from that jack.

I had notes on that also. I seen a few fixes floating around for a true clean out.. have to find the notes again. Im not to worried about it.

I've got a blue board... something is killing the signal on the first opamp or two. I should probably troubleshoot it again.

DO IT! We can all do build reports on this thing.

Back to the bench!

Cody

[davent]

Still haven't got to the other computer but i believe this may be what i was thinking of. Good pictures detailing the fix a few posts after this explanation.

http://www.diystompboxes.com/smfforum/index.php?topic=102012.msg946590#msg946590

dave

[selfdestroyer]

Still haven't got to the other computer but i believe this may be what i was thinking of. Good pictures detailing the fix a few posts after this explanation.

http://www.diystompboxes.com/smfforum/index.php?topic=102012.msg946590#msg946590

dave

Dang, your right. Back to the bench. At least it seems to be an easy mod and not like the first ver of the PCB. LOL

Cody